83' Hurst Radiator?

[Kra5379]

Well, yeah, that number is discontinued from GM. They only made it 40+ years ago. But if you're wanting to restore it to what's correct, that's the ONLY number you had. So rock turning you must go.

No, you're not mistaken, the H/Os were based on the Calais. However, that 20982 you have isn't a GM part number. Maybe an AC Delco number, but not a GM number. The GM number is 52481615 which says it fits. Still, that could be debateable. It fits a lot of applications. But never call that an original replacement because it's not. It's still aluminum and plastic with sh*t you have to block off for use in an 83 H/O. No matter what number you stamp on the box. The original radiator was a 3043077. Period. And there's no way you can say the current GM part number that says fits the car is the original, because it's not.

The Summit radiator will be the closest to what the original was without finding an actual original. And it's made as universal as possible as well.

If you're going to look up what part number to use, you need to look it up and find out whether it's got HD cooling or not, and A/C (all VIN 9 Oldses had A/C), and a 307.

View attachment 216034

I know it’s missing a few digits for a typical GM P/N possibly a superseded number? But it says it’s a Genuine GM not AC Delco?

 

[Kra5379]

Well, yeah, that number is discontinued from GM. They only made it 40+ years ago. But if you're wanting to restore it to what's correct, that's the ONLY number you had. So rock turning you must go.

No, you're not mistaken, the H/Os were based on the Calais. However, that 20982 you have isn't a GM part number. Maybe an AC Delco number, but not a GM number. The GM number is 52481615 which says it fits. Still, that could be debateable. It fits a lot of applications. But never call that an original replacement because it's not. It's still aluminum and plastic with sh*t you have to block off for use in an 83 H/O. No matter what number you stamp on the box. The original radiator was a 3043077. Period. And there's no way you can say the current GM part number that says fits the car is the original, because it's not.

The Summit radiator will be the closest to what the original was without finding an actual original. And it's made as universal as possible as well.

If you're going to look up what part number to use, you need to look it up and find out whether it's got HD cooling or not, and A/C (all VIN 9 Oldses had A/C), and a 307.

View attachment 216034

Weirder yet, when looking up a 1983 Supreme with a V8, it doesn’t list this radiator at all, only under the Calais

 

[69hurstolds]

I know it’s missing a few digits for a typical GM P/N possibly a superseded number? But it says it’s a Genuine GM not AC Delco?

It might be a superseded number, and GM might have their logo sticker on it, but it's like most other supersessions that they combine into one part number to fit 30 different cars when the original wasn't at all like what's still available. If it shows both numbers on the part number decal, it still can be a Delco and a GM part at the same time. The original radiators had an ACDelco number and a GM number associated with them, even though they were actually made by Harrison. Same with the R4 A/C compressors.

ACDelco made many parts for GM production vehicles. ACDelco and GM parts are synonymous with each other.

Again, it depends on what you want when restoring a car. If you want a GM replacement part, that radiator could probably work, but it will not ever be a correct production-style/restoration part like the original. It's a far cry from where the radiators started.

The same thing with the A/C condensers. The originals were serpentine single tube. But the later superseded part number is the crossflow style, which is better for 134a conversions, btw, but it's much thinner than the original and you have to bend the brackets in or shim the pizz out of the original mount bushings to keep the newer condenser in place from flopping around.

GM parts you get at the dealer do not always appear the same as the original production parts. Many were, but as the years went on, changes were made that might make it still fit and function (that's all GM cared about) but not quite look like the original part. Sometimes superseded numbers are good because they fixed bugs and flaws from the original, and sometimes, especially for many restorations, they might not be the desired choice because they look a little different than the production part.

 

[69hurstolds]

Here's an example of what I was talking about when a Delco part and a GM part can be the same thing at the same time. This radiator box label clearly shows it's an ACDelco Radiator, Delco p/n 20341. But it also has a GM p/n showing of 52481554. Looking up either part number will get you the same part. It's for an older Corvette with a big block Chevy engine, but you get the idea. The original part number was 3008567. They make repros in brass for this thing as well, now. For $1500, it's worth it to some of these Corvette guys.

 

[Kra5379]

Here's an example of what I was talking about when a Delco part and a GM part can be the same thing at the same time. This radiator box label clearly shows it's an ACDelco Radiator, Delco p/n 20341. But it also has a GM p/n showing of 52481554. Looking up either part number will get you the same part. It's for an older Corvette with a big block Chevy engine, but you get the idea. The original part number was 3008567. They make repros in brass for this thing as well, now. For $1500, it's worth it to some of these Corvette guys.

View attachment 216040

I know what you’re saying, I’ve had pretty good luck at getting some genuine GM NOS parts at good prices through them. Typically if they list it as “Genuine GM” that’s what you get. I just had to decide last week if I wanted to spend $120 on “Genuine GM” rear springs, or $40 on the AC Delco….I cheaped out this time Lol

 

[78Delta88]

Ok guys my 83' Hurst/Olds with 49,*** miles has a bad radiator. The shop can fix it but I am looking at $450 is there some place I can buy an original replacement or very very close? I am doing my best to be original.


Thanks

Send me the dimensions... I might have one copper/brass OEM. Came from 79 cutlass Coupe V8 with AC

 

[KiaTia]

Update i have decided to let my guy rebuild the original radiator. Well with one replacement tank and new HD core it is a little more expensive but it will be correct.

Thanks for the outstanding information you guys share it is really helpful.

 

[69hurstolds]

There's a radiator "tag" should be on the passenger end, engine side of the radiator. Make sure that stays and doesn't go missing. That's your ID tag for the radiator. I mean, if you want it to still appear as original as possible.

 

[88hurstolds]

Ok guys my 83' Hurst/Olds with 49,*** miles has a bad radiator. The shop can fix it but I am looking at $450 is there some place I can buy an original replacement or very very close? I am doing my best to be original.


Thanks

How much for your original?

 

[78Delta88]

I know this an older post... Last week at the yard I picked this one up. Copper tanks, no GM parts tag, so at one point this was a replacement for OEM.

Size is...
Height ... 18.5 inch
Tank to tank width ... 26.5 inch
Mounting rib to rib ... 27.25 inch
Thickness ... 1.75

Current "Plan" is to clean and pressure test. If anyone needs it, hit me up. Other wise might go to running stand in process.

Source was 84 Cutlass Supreme.

I bought out all the BOP cores he had for transmissions, so got this at affordable price.